Non linear predictions from linear theories in models with Dark Energy

Abstract

We study the cluster mass function and its evolution in different models with Dark Energy arising from a self--interacting scalar field, with Ratra-Peebles and SUGRA potentials. Computations are based on a Press & Schechter approximation. The mass functions we obtain are compared with results holding for open models or models with Dark Energy due to a cosmological constant. Evolution results, in the Dark Energy cases, closely approach open models.

13 pages, 3 new figures included, references added. Accepted for pubblication in New Astronomy

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